Observations from the Jets’ training camp on Monday:

Justin Fields looks to be developing solid chemistry with rookie tight end Mason Taylor, hitting him over the middle off play-action for a big gain and finding him a second time later in practice.

Arian Smith fumbled during one-on-one drills, with Qwan’tez Stiggers forcing the ball out.

On the first day with pads, the Jets held a notably physical practice, featuring a live tackling drill and a one-on-one pass rushing drill where little was being held back, a far cry from what has become the norm over recent years.

Fields participated in 11-on-11 drills for the first time after dislocating his toe, but Aaron Glenn said he was limited, declining to elaborate on how. … Offensive lineman Gus Hartwig appeared to hurt his knee late in practice. Glenn said he was being evaluated